Water reuse has always been something better in theory than actual practice.
I used to own a company that did a lot of closed loop systems. We were quite
successful in the metal finishing applications, less so in PC. There has
been some high profile failures in PC Fab, I will not get specific, but it
usually comes down to organic fouling. This is difficult to pre-filter.

It is very possible to recycle metal bearing wastes, without organics. It
come down to economics, (cost of water, equipment ROI, regulatory pressure,
etc)

Russell Gann
CCI


- Original Message -----
From: Bob Dube <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, December 15, 1999 4:41 AM
Subject: Re: [TN] Water re-use.


> Bare board fab.
>
> -Bob
>
> -----Original Message-----
> From: Alain Savard <[log in to unmask]>
> To: [log in to unmask] <[log in to unmask]>
> Date: Tuesday, December 14, 1999 3:27 PM
> Subject: Re: [TN] Water re-use.
>
>
> >Do you mean for bare fab boards manufacturing or for assembly?
> >
> >We recycle water for post-wave and post-reflow cleaning.
> >
> >Alain Savard, B.Sc.
> >Chemical Process Analyst
> >CAE Electronics Ltd.
> >e-mail: [log in to unmask]
> >
> >
> >-----Original Message-----
> >From: Bob Dube
> >
> >Any PWB fabricators out there re-using water? (he typed knowing what the
> >reply would be). What water characteristics are being monitored to ensure
> >the water's fitness for re-use? Any particular rinse streams being tagged
> as
> >non-reusable?
> >
> >Bob Dube
> >ES&D
> >
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